#app {
  margin: 0 auto;
  max-height: 100vh;
  height: 100vh;
  overflow: hidden;
  font-weight: normal;
  position:fixed;
  top:0;
  bottom:0;
  left:0;
  right: 0;
  z-index: 10;
  overflow: hidden;
}

a,
.green {
  text-decoration: none;
  color: hsla(160, 100%, 37%, 1);
  transition: 0.4s;
}

@media (hover: hover) {
  a:hover {
    background-color: hsla(160, 100%, 37%, 0.2);
  }
}

body{
  --color-purple:#FF69B4;
  --color-yellow: #FF8C00;
}

#backCloud{
  position:fixed;
  top:0;
  bottom:0;
  left:0;
  right: 0;
  overflow: hidden;
  z-index: 2;
}

.flex{
  display: flex;
}
.column{
  flex-direction: column;
}
.row{
  flex-direction: row;

}
.justify-center{
  justify-content: center;
}
.align-center{
  align-items: center;
}
.justify-around{
  justify-content: space-around;
}
.justify-between{
  justify-content: space-between;
}

